Introduction - If you have any usage issues, please Google them yourself
Function
Dim d, s, R, i%
Set d = CreateObject("Scripting.Dictionary")
For Each R In t
s = s & R
Next
s = StrReverse(s) & "0123456789"
For i = 1 To Len(s)
d(Mid(s, i, 1)) = ""
Next
= Join(d.keys, "")
End Function